[Eeglablist] ERP based on mulitple triggers

[Makoto Miyakoshi]

Dear Xianghong,

> 1. when we have channels for eye movement and EKG artifact, how to get
rid of them?

You don't need to exclude them. If you do anyways, 'Edit'-'Select data' and
specify the channels to remove.

> 2. How to decide the component to get rid of after we did ICA?

If you are going to process them with STUDY, you don't need to reject ICs
manually.

Our 'STUDY' uses the following criteria to select good ICs: a) equivalent
current dipole residual variance < 15%, which means you have to fit dipoles
after ICA; b) dipole position inside the brain.

> Plus, I saw eeglab could also analyse MEG data. Do we need to download
plugins for eeglab? Where?

That I don't know. I've heard you need to have a sensor matrix also?

Makoto

On Wed, Oct 8, 2014 at 9:40 AM, Xianghong <xianghong at hmri.org> wrote:

>  Hi,
>
> I have studied and used eeglab for a few months, and need some help with
> the basic question about preprocessing EEG data:
> 1. when we have channels for eye movement and EKG artifact, how to get rid
> of them?
> 2. How to decide the component to get rid of after we did ICA?
>
> Plus, I saw eeglab could also analyse MEG data. Do we need to download
> plugins for eeglab? Where?
>
> Thanks,
> Best,
>
> Xianghong
>
>
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-- 
Makoto Miyakoshi
Swartz Center for Computational Neuroscience
Institute for Neural Computation, University of California San Diego
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